import java.util.ArrayList;

public class ctest69 {
    public static void main(String[] args) {
        ArrayList<ctest68> list = new ArrayList();
        ctest68 c1 = new ctest68("zhangsan",18,"男");
        ctest68 c2 = new ctest68("lisi",19,"男");
        ctest68 c3 = new ctest68("wangwu",20,"男");
          list.add(c1);
          list.add(c2);
          list.add(c3);
          int maxage = ctest70.getMaxAge(list);
          System.out.println(maxage);
    }
}
